Answer: The speed of light in glass is [tex]2\times 10^8m/s[/tex]
Explanation:
To calculate the velocity of light in a medium for given refractive index, we use the equation:
[tex]\eta=\frac{c}{v}[/tex]
where,
[tex]\eta[/tex] = refractive index of glass = 1.5
c = speed of light in air = [tex]3\times 10^8m/s[/tex]
v = speed of light in medium = ?
Putting values in above equation, we get:
[tex]1.5=\frac{3\times 10^8m/s}{v}\\\\v=2\times 10^8m/s[/tex]
Hence, the speed of light in glass is [tex]2\times 10^8m/s[/tex]
